No clue what this is. Been searching everything from plastic washer to sewing grommets.
http://i63.photobucket.com/albums/h136/jameth1971/jameth1971132/breather_005_0 22.jpg
i believe its probably a model car hubcap
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thomas i am loving the parts!! did you grab the soda on eBay? any advice on what to search for? did the ATAT driver black piece come with the soda or is that another piece you have to hunt down?